Riskcovery

CVE-2024-56543

wifi: ath12k: Skip Rx TID cleanup for self peer

State
Published
Severity
Not scored
Published
Dec 27, 2024
Updated
May 11, 2026
Reserved
Dec 27, 2024

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: Skip Rx TID cleanup for self peer

During peer create, dp setup for the peer is done where Rx TID is updated for all the TIDs. Peer object for self peer will not go through dp setup.

When core halts, dp cleanup is done for all the peers. While cleanup, rx_tid::ab is accessed which causes below stack trace for self peer.

WARNING: CPU: 6 PID: 12297 at drivers/net/wireless/ath/ath12k/dp_rx.c:851 Call Trace: __warn+0x7b/0x1a0 ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] report_bug+0x10b/0x200 handle_bug+0x3f/0x70 exc_invalid_op+0x13/0x60 asm_exc_invalid_op+0x16/0x20 ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] ath12k_dp_rx_frags_cleanup+0xca/0xe0 [ath12k] ath12k_dp_rx_peer_tid_cleanup+0x39/0xa0 [ath12k] ath12k_mac_peer_cleanup_all+0x61/0x100 [ath12k] ath12k_core_halt+0x3b/0x100 [ath12k] ath12k_core_reset+0x494/0x4c0 [ath12k]

sta object in peer will be updated when remote peer is created. Hence use peer::sta to detect the self peer and skip the cleanup.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before d73da0dd2853887b7aab71f0d572fd3314dafafeAffected
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before a1e2d6738b29c74c2024eb23167dfff68aadd984Affected
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before a052483d495a4dc62c814f2fd17d0ceb308fc6a6Affected
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 1a0c640ce1cdcde3eb131a0c1e70ca1ed7cf27cbAffected
LinuxLinux
  • 6.3Affected
  • before 6.3Not affected
  • 6.6.64 through 6.6.*Not affected
  • 6.11.11 through 6.11.*Not affected
  • 6.12.2 through 6.12.*Not affected
  • 6.13 and laterNot affected

References

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